Extension ladder



Oct. 5 1926.

A. H. MEYER EXTENSION LADDER 2 Sheets-Shes?. 1

Filed Nov. 10 1925 Oct. 5 1926.

IA. H. MEYER EXTENSI ON LADDER 2 Sheets-Sheet 2 Filed Nov. lO 1925 l @Wommj Patented Oct. 5, 1926.

FICE.

ALEONZ' MEYER, 0F YAKI'MA, WASHINGTON.

EXTENSON LADDER'.

-Applicati'on led November the sainel 1s,y read in conneetion. with. the.:

drawings, ,aceemrauyfihe and. femmine part et this Speeiieat-en, in which Figure-lis a frontgelev-ation oiithefladder eeestitutngthe preferredembedimeht@they invention, the ladder being shown in said,

figure withthe; pro-p mem;her.V omitted.:

Fgure 2 is a Complete; View of the; ladder shown inV edge elevation,l with a portionbroken away.

Figure 3A is anV enlarged; inverted frag-y mentary View showing ay pOIOn ofn one of the steps of the upper section.

Figure 4- 'sf an Inverted plank View on an enlarged scale showing: the nenti-to; the'. upper! step of the lower ladder section;v and also justablylocking the ladder sections together.

Figure 5l is a fragmentary inverted plan view showingl a portion of' the lower Step. Of; thev ladder, which stepK is comprised in theholder hereinafter described, and also illus'-,

Figure 11 is any enlarged detail section.

illustrative of theidog 47 and the'parts ad.. jacent thereto.

Similar numerals of reference d'esig-g-nagtel corresponding parts inall ofthe views of;

the drawings.

The holder: hereinbefore, alludedY to; is`

ShQWh, Eeures 1,5. and 6,. and; ameneother elements the said; holder includes.; a;V herlzentalhedy vharw l., prerdedat tsunderside with a longitudinal central strengtheningribfZfand; havingigat itsbends appropriate guides 3 for holding therein spring-pressed latch-bolts 4 on which are finger pieces 5 which extend upwardly from the latch bolts mayvehvieaelyhefrea y f Heeren glzeundi and. te` melma-,twas

showing the appurtenances thereof tor-ade- 10, 1925;- serial Nu.v 68u73.

4 aS will be readily understood from Figure 1. The springs hackingy the bolts 4; are deseaweed..V by 6,. The har l is adaptedy te constitutethe lowest step of the structure, Figure 1 and it: willA be understood that the side' stiles 7 et thelower ladder sectionv are superposed on andj appropriately connected te the` Said bar l. The helder alee eempl'ses aaallpper'f'traneverse har 8 xedly; Cerm'eeted. at19 te the said eide-I Stiles. 7,. in# clined, sleeweertubular: portions 10. of; any suitable eress-eeetea aterpesed between andzeenheefed tof bodyy hair l and the @resev bar' 8; a-hd fixed thereto, and' lege 11- sheathedin the salidsleeves or tubular por? tions 1,0 and having atl intervillS in their lengths apertures 12th receive..A the betere mentioned latch belts 4 4 Brr virtue ef this weetrueteh 0f helder;1 thefladder aS. aV Whole 'l accprnrnodated to Ati the'lewer eeetioa of theA ladder is previded with a hand; held! and. rene te taeltate-the handling et the Structure.,

The :Side etileel 0f the'upperladder,l tien. aretsraeed-a greater.- dstaneeY apart than the side stiles 7 of the lower section and are designed to rest longitudinally at. the;` outer Sides eff the. SaidA Stiles 7:' andfheeapahle Ofi longitudinal movementthereonl.. At15. and 16 the'` lowerA section isi providedI with steps' interposed between thesijdei Stiles 7 ancliixed thereto' infamy appropriate: manner: At their` upper. endey the; Side Stiles' 14: are een: heeedby a crown bar 1.7,; and immediately' below the said crown bar 17, crossed braces ,Y 18,- are interposedbetweeni and li-Xed to the sideist-iles 1 4. Asillustrated the upper sectionf ofthe vladderconiprises four steps 19, .one of; the said steps 19,V being shown. in detail iny Figure 3. It will also be noticed" that the side' stiles;l4 ofthe; upper ksection are? provided with openings 20, which are preferably, though notA necessarily, of the coniguration; shown; in Figure f 2. Eachl of the; steps@ 19 is; provided at its. ends, with spr-ingepressed bolts 22,-Y desi-gned to bev Seated? in twefv of, therv apertures 20'` with; a viewf to; strollgl7 andsa-fely f* supporti-ng the istepsf-.olrthesidestles14. The boltse22'niayi be; mmred inwardly pressure fappliedte their. 'outer-1 ends; -nf other approved.- mamierzf of'y the stepsgel) isalso;A prof,

' vided with hooks23spaced from the ends of the steps and carried by bars 24 of metal, opposed to the front edge of the step and iiXedly connected to the step by lugs and screws 26 extended through said lugs and intothe step, it being understood in this connection that each of the steps 19 is preferably formed of wood. By virtue of the specific construction just described it will be manifest that each of the. steps 19 will be strongly held to and supported by the side stiles 14, and that the steps 19 will operate to strongly hold the stiles 14 together and against outward movement.

Carried adjacent to the upper ends of the side stiles 7 of the lower ladder section is a step member 30, appropriately connected to the side stiles 7 and having at its ends guide loops 31 arranged to receive the side lstiles 14 of the upper section. Spaced below the member is a member 32 with end loops 33 which receive the side stiles 7 and 14 with a view to holding and guiding the side stiles 14 so that the side stiles 14 will be held against lateral deflection relative to the side stiles 7. The member 32 is shown in detail in Figure 4 and in Figure 8, as well as in Figure 1, and by comparison of the said gures the member 32 will be understood as having latch bolts 34, equipped with pendent finger pieces 35 and pressed outwardly by spring means 36, this in order that the said latch bolts 34 will tend to enter and remain against casual displacement in apertures 2O in the side stiles 14, it being understood in this connection that the bolts 34 are passed through openings in the side stiles 7 precedent to entering the said apertures 20.

It will be apparent from the foregoing that when the bolts 34 are retracted, the upper section of the ladder may be expeditiously and easily raised or lowered on the lower section; and it will also be apparent that when for any reason it is desired to disconnect one of the step members 19 from the side stiles 14 the disconnection may be readily effected.

In addition to the elements named, my novel ladder comprises a prop member which is so arranged that it will not interfere with the arrangement of the ladder in inclined position against a wall or other upright support, and yet may be quickly and easily positioned so as to constitute the sole supportl of the ladder. The said prop member is made up of a sleeve and a bar 41 telescopically arranged in the sleeve 40. The said sleeve 40 and bar 41 are disposed in the longitudinal center of the ladder structure, and the sleeve 40 is provided at its upper end with -a Thead 42, pivotally 4connected at 43 to anges 44 on the crownbar 17 and connected with an intermediate Y portion of the sleeve 40 through the medium of metallic braces 45. The bar 41 is provided at intervals in its length with notches 46, the upper walls of which are inclined as shown in Figure 2. For use in conjunction with the said notches 46 the sleeve 40 is provided with a spring dog 47, having a finger piece as illustrated and therefore adapted to be drawn out of engagement with the particular notch 46 that is opposed to it, it being understood here vthat the normal tendency of the latch 47 is to spring into the notches 46 of the bar 41 so that when the bar 41 is drawn downwardly inV the sleeve 40 the latch 47 will permit of said movement and yet will preclude accidental movement of the bar 41 in the opposite direction when the latch 47 is seated in the particular notch 46 that it is necessary to use for the correct positioning of thebar 41, to support the ladder structure at the point desired. Manifestly when the bar 41 is moved downwardly in the sleeve 40, the upper inclined walls of the notches 46 will ride over and press outwardly the dog 47.

It will be readily manifest from the foregoing that the prop member of my improve* ment may be increased and diminished in length as the 'upper section of the ladder is adjusted with respect to the lower sec'- tion thereof. p Y

I have specifically described the construction and relative arrangement of the parts embraced in the present and preferred embodiment of my invention in order to impart a full, clear and exact understanding of the said embodiment. I do not desire, however, to be understood as confining mi self to the construction and arrangementV disclosed, my invention being defined by my appended claim within the scope ofv which changes in the structure and in arrangement may be made without departure from my invention. y

I-Iaving described my invention, what I claim and desire to secure by Letters Patent, is Y In a ladder structure, a ladder having side stiles and steps between the same, in combination with a holder made up of a body bar upon which the side stiles are superposed, a top portion spaced above said body bar and 4connected to the side stiles, inwardly inclined sleeves interposed between and fixed to the ends of said body bar and top portion, apertured legs telescopically arranged in said sleeves, and latch bolts carried by the body bar and adapted to seat in the apertured legs to retain the latter in different adjustedpositions.

In testimony whereof I afhx my signature.

,errors n. Marne, 

